1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4817f51eb05806702eeac8cdc3e9fadb2f9c5784c0414bb8aa2ef5552e2cbecd. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47955fc2-9df9-4b96-9152-049de083e87a.json and https://artists.proofprofile.net/proofs/artist/47955fc2-9df9-4b96-9152-049de083e87a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2717f1f885050b6562a265536e0cf2627ecbfee447d3e9eb26da0d2871913931. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462431016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d630f1895ab5c0f29b2c4407be1e921c8678470c6d06aba716ab618ce32614. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462431017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136e360bb51d5077053f3e02889663fe933af8fb2f8719614b25ea7e1ded85f4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462431018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7392117129e687ba36fd92cf6cc58463fbb96fbc77bb657af6bde3893b0f38b3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462431019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ffcf8780a231908c06af8366b90b8f08436ae75165282403fb4b9441465299. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462431020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455a0f60b673b834b6047df6c293aa882cc3a9a4972556fd4015678a634a72fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462431021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ccc88d8ca8d7089fb1936edd525b38b22aa22f17c62a4e1a8796e2d50d4260. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462439313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f15cbc9c7eb88081acb65215ab2333253f1885ed62658717f24cff442641ac. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462439314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a574d3b20f389058ee1168f053629a4739a4cafc4244fa8789d1992d6cd01ae. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462439315.
signal from the unknown (Instrumental. Ver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaede042fbcf0e5836d4d156e23f10ca1e485ed05adaf83885da1d7ab4fe59ee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462439316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e32056b58238aeb0032475c3448b97ce140c8a90cd2d61a63d68f24e1528a4. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462439317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8620482afd1179c93310e419339c76d8bf92d395748c648a80447fac9128b6c1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462439318.